Temperature induced structural, electrical and optical changes in solution processed perovskite material: Application in photovoltaics

Tripathi, Brijesh; Bhatt, Parth; Kanth, P. Chandra; Yadav, Pankaj; Desai, Bhakti; Pandey, Manoj Kumar; Kumar, Manoj

doi:10.1016/j.solmat.2014.10.017

Cited by 60 publications

(22 citation statements)

References 44 publications

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“…3e). All the perovskite films show absorbance in the overall visible region with threshold at about 780 nm, which is in accordance with the reported results383940. The intensities of all peaks in the UV region for the films based on PbAc 2 are obviously higher than those based on PbI 2 due to the improved surface coverage and enlarged grain size as presented in the SEM results, showing a higher light adsorption ability.…”

Section: Resultssupporting

confidence: 90%

Improving the photovoltaic performance of perovskite solar cells with acetate

Zhao

Song

et al. 2016

Sci Rep

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In an all-solid-state perovskite solar cell, methylammonium lead halide film is in charge of generating photo-excited electrons, thus its quality can directly influence the final photovoltaic performance of the solar cell. This paper accentuates a very simple chemical approach to improving the quality of a perovskite film with a suitable amount of acetic acid. With introduction of acetate ions, a homogeneous, continual and hole-free perovskite film comprised of high-crystallinity grains is obtained. UV-visible spectra, steady-state and time-resolved photoluminescence (PL) spectra reveal that the obtained perovskite film under the optimized conditions shows a higher light absorption, more efficient electron transport, and faster electron extraction to the adjoining electron transport layer. The features result in the optimized perovskite film can provide an improved short-circuit current. The corresponding solar cells with a planar configuration achieves an improved power conversion efficiency of 13.80%, and the highest power conversion efficiency in the photovoltaic measurements is up to 14.71%. The results not only provide a simple approach to optimizing perovskite films but also present a novel angle of view on fabricating high-performance perovskite solar cells.

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Section: Resultssupporting

confidence: 90%

Improving the photovoltaic performance of perovskite solar cells with acetate

Zhao

Song

et al. 2016

Sci Rep

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“…Similar results were obtained for CH 3 NH 3 PbI 3 on metal oxides by other authors [14,15]. The detailed study on the temperature induced structural changes in CH 3 NH 3 PbI 3 absorber layer is reported in our previous article [16]. The XRD analysis shows CH 3 NH 3 PbI 3 having tetragonal structure with the lattice parameters of a¼8.56 Å, c¼12.48 Å, and α¼β¼γ¼90°.…”

Section: Resultssupporting

confidence: 87%

“…1D, which is in well agreement with the reported literature [17,18]. The absorption and transmission data were used to determine the optical band gap (E g ) of the perovskite using the Tauc plot method [16] that follows the expression,…”

Section: Resultssupporting

confidence: 82%

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Investigating the charge carrier transport within the hole-transport material free perovskite solar cell processed in ambient air

Bhatt

Pandey

Yadav

et al. 2015

Solar Energy Materials and Solar Cells

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“…Accordingly, efforts have been made to examine the crystallization kinetics. Firstly, the basic film processing parameters have been investigated by tuning the annealing temperature [20][21][22][23] and time [21], spin-coating rate [24], the atmospheric conditions [25,26], or by employing different solvents [22,27,28] or additives [29][30][31][32][33]. Secondly, the starting materials including inorganic lead source and organic ammonia salt have been found to determine the perovskite crystal growth kinetics, which in turn affects the film morphology and device performance [34][35][36][37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Controlled crystallization of CH3NH3PbI3 films for perovskite solar cells by various PbI2(X) complexes

Yan

Zhang

et al. 2016

Solar Energy Materials and Solar Cells

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a b s t r a c tLead halide complexes are efficient precursors to obtain high quality perovskite films and high performance solar cells. However, how the lead halide complex affects the crystallization kinetics and thus the film quality of perovskite has not been systematically studied. Herein, two PbI 2 (X) complexes with different coordination strength of ligand X in complexation with PbI 2 (PbI 2 (DMF) and PbI 2 (DMSO)) are synthesized. The correlation between the morphology, evolution of the perovskite formation, defects state, carrier lifetime and the subsequent photovoltaic performance are investigated in details via a twostep coating method with various PbI 2 (X) complexes. We find that PbI 2 (DMSO) derived perovskite film shows larger grains and vertically oriented grain boundaries as well as enhanced photoluminescence intensity and longer carrier lifetime. As a result, highly efficient inverted planar perovskite solar cells with a power conversion efficiency up to 17.0% are achieved from PbI 2 (DMSO) complex under 1 sun illumination. This research could open up a new pathway to further improve the performance of perovskite solar cells through the control of perovskite crystallization kinetics by choosing proper PbI 2 (X) complex precursors.

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Temperature induced structural, electrical and optical changes in solution processed perovskite material: Application in photovoltaics

Cited by 60 publications

References 44 publications

Improving the photovoltaic performance of perovskite solar cells with acetate

Improving the photovoltaic performance of perovskite solar cells with acetate

Investigating the charge carrier transport within the hole-transport material free perovskite solar cell processed in ambient air

Controlled crystallization of CH3NH3PbI3 films for perovskite solar cells by various PbI2(X) complexes

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